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"""An adapter between a Git Repository and a Bazaar Branch"""
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from bzrlib import (
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from bzrlib.transport import get_transport
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from bzrlib.plugins.git import (
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class GitRepository(repository.Repository):
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"""An adapter to git repositories for bzr."""
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def __init__(self, gitdir, lockfiles):
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self.base = gitdir.root_transport.base
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self.bzrdir = gitdir
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self.control_files = lockfiles
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self._git = git.repo.Repo(gitdir.root_transport.local_abspath("."))
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self._blob_info_cache = {}
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cache_dir = cache.create_cache_dir()
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cachedir_transport = get_transport(cache_dir)
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cache_file = os.path.join(cache_dir, 'cache-%s' % ids.NAMESPACE)
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if not cachedbs.has_key(cache_file):
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cachedbs[cache_file] = cache.sqlite3.connect(cache_file)
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self.cachedb = cachedbs[cache_file]
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self.signatures = versionedfile.VirtualSignatureTexts(self)
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self._format = GitFormat()
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self._fallback_repositories = []
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gitdirectory = gitdir.transport.local_abspath('.')
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self._git = model.GitModel(gitdirectory)
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self._revision_cache = {}
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def _init_cachedb(self):
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self.cachedb.executescript("""
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create table if not exists inventory (
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create unique index if not exists inventory_revid
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create table if not exists entry_revision (
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create unique index if not exists entry_revision_revid_path
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on entry_revision (inventory, path);
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def _ancestor_revisions(self, revision_ids):
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if revision_ids is not None:
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git_revisions = [gitrevid_from_bzr(r) for r in revision_ids]
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for lines in self._git.ancestor_lines(git_revisions):
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yield self._parse_rev(lines)
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def is_shared(self):
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def supports_rich_root(self):
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def get_ancestry(self, revision_id):
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revision_id = revision.ensure_null(revision_id)
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if revision_id != revision.NULL_REVISION:
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cms = self._git.commits(ids.convert_revision_id_bzr_to_git(revision_id), max_count=max_count, skip=skip)
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ret += [ids.convert_revision_id_git_to_bzr(cm.id) for cm in cms]
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def get_signature_text(self, revision_id):
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raise errors.NoSuchRevision(self, revision_id)
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def has_signature_for_revision_id(self, revision_id):
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def get_parent_map(self, revision_ids):
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for revid in revision_ids:
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commit = self._git.commit(ids.convert_revision_id_bzr_to_git(revid))
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ret[revid] = tuple([ids.convert_revision_id_git_to_bzr(p.id) for p in commit.parents])
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def get_revision_graph(self, revision_id=None):
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if revision_id is not None:
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param = [ids.convert_revision_id_bzr_to_git(revision_id)]
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for node, parents in self._git.ancestry(param).iteritems():
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bzr_node = ids.convert_revision_id_git_to_bzr(node)
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bzr_parents = [ids.convert_revision_id_git_to_bzr(n)
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result[bzr_node] = bzr_parents
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def get_revision_graph_with_ghosts(self, revision_ids=None):
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graph = deprecated_graph.Graph()
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if revision_ids is not None:
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revision_ids = [ids.convert_revision_id_bzr_to_git(r)
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for r in revision_ids]
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for node, parents in self._git.ancestry(revision_ids).iteritems():
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bzr_node = ids.convert_revision_id_git_to_bzr(node)
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bzr_parents = [ids.convert_revision_id_git_to_bzr(n)
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graph.add_node(bzr_node, bzr_parents)
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def get_revision(self, revision_id):
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git_commit_id = ids.convert_revision_id_bzr_to_git(revision_id)
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commit = self._git.commit(git_commit_id)
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# print "fetched revision:", git_commit_id
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revision = self._parse_rev(commit)
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if revision_id in self._revision_cache:
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return self._revision_cache[revision_id]
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raw = self._git.rev_list(
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[ids.convert_revision_id_bzr_to_git(revision_id)],
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max_count=1, header=True)
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return self._parse_rev(raw)
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def has_revision(self, revision_id):
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return [self.get_revision(r) for r in revisions]
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def _parse_rev(klass, commit):
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"""Convert a git commit to a bzr revision.
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def _parse_rev(klass, raw):
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"""Parse a single git revision.
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* The first line is the git commit id.
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* Following lines conform to the 'name value' structure, until the
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* All lines after the first blank line and until the NULL line have 4
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leading spaces and constitute the commit message.
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:param raw: sequence of newline-terminated strings, its last item is a
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single NULL character.
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:return: a `bzrlib.revision.Revision` object.
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rev = revision.Revision(ids.convert_revision_id_git_to_bzr(commit.id))
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rev.parent_ids = tuple([ids.convert_revision_id_git_to_bzr(p.id) for p in commit.parents])
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committer_was_set = False
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revision_id = ids.convert_revision_id_git_to_bzr(raw[0][:-1])
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rev = revision.Revision(revision_id)
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rev.inventory_sha1 = ""
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rev.message = commit.message.decode("utf-8", "replace")
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rev.committer = str(commit.committer)
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rev.properties['author'] = str(commit.author)
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rev.timestamp = time.mktime(commit.committed_date)
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assert raw[-1] == '\x00', (
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"Last item of raw was not a single NULL character.")
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for line in raw[1:-1]:
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assert line[:4] == ' ', (
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"Unexpected line format in commit message: %r" % line)
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message_lines.append(line[4:])
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name, value = line[:-1].split(' ', 1)
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rev.parent_ids.append(
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ids.convert_revision_id_git_to_bzr(value))
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author, timestamp, timezone = value.rsplit(' ', 2)
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rev.properties['author'] = author
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rev.properties['git-author-timestamp'] = timestamp
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rev.properties['git-author-timezone'] = timezone
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if not committer_was_set:
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rev.committer = author
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rev.timestamp = float(timestamp)
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rev.timezone = klass._parse_tz(timezone)
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if name == 'committer':
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committer_was_set = True
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committer, timestamp, timezone = value.rsplit(' ', 2)
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rev.committer = committer
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rev.timestamp = float(timestamp)
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rev.timezone = klass._parse_tz(timezone)
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rev.properties['git-tree-id'] = value
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rev.message = ''.join(message_lines)
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def _parse_tz(klass, tz):
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"""Parse a timezone specification in the [+|-]HHMM format.
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:return: the timezone offset in seconds.
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sign = {'+': +1, '-': -1}[tz[0]]
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minutes = int(tz[3:])
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return float(sign * 60 * (60 * hours + minutes))
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def revision_trees(self, revids):
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for revid in revids:
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yield self.revision_tree(revid)
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def revision_tree(self, revision_id):
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revision_id = revision.ensure_null(revision_id)
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if revision_id == revision.NULL_REVISION:
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inv = inventory.Inventory(root_id=None)
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inv.revision_id = revision_id
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return revisiontree.RevisionTree(self, inv, revision_id)
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return GitRevisionTree(self, revision_id)
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def _fetch_blob(self, git_id):
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lines = self._git.cat_file('blob', git_id)
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# print "fetched blob:", git_id
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if self._building_inventory is not None:
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self._building_inventory.git_file_data[git_id] = lines
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def _get_blob(self, git_id):
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return self._blob_cache[git_id]
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return self._fetch_blob(git_id)
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def _get_blob_caching(self, git_id):
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return self._blob_cache[git_id]
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lines = self._fetch_blob(git_id)
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self._blob_cache[git_id] = lines
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def _get_blob_info(self, git_id):
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return self._blob_info_cache[git_id]
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lines = self._get_blob(git_id)
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size = sum(len(line) for line in lines)
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sha1 = osutils.sha_strings(lines)
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self._blob_info_cache[git_id] = (size, sha1)
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def get_inventory(self, revision_id):
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assert revision_id != None
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return self.revision_tree(revision_id).inventory
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def _set_entry_text_info(self, inv, entry, git_id):
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if entry.kind == 'directory':
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size, sha1 = self._get_blob_info(git_id)
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entry.text_size = size
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entry.text_sha1 = sha1
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if entry.kind == 'symlink':
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lines = self._get_blob_caching(git_id)
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entry.symlink_target = ''.join(lines)
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def _get_file_revision(self, revision_id, path):
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lines = self._git.rev_list(
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[ids.convert_revision_id_bzr_to_git(revision_id)],
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max_count=1, topo_order=True, paths=[path])
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result = ids.convert_revision_id_git_to_bzr(line[:-1])
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# print "fetched file revision", line[:-1], path
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def _get_entry_revision_from_db(self, revid, path, git_id, executable):
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result = self.cachedb.execute(
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"select revision from entry_revision where"
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" inventory=? and path=? and gitid=? and executable=?",
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(revid, path, git_id, executable)).fetchone()
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def _set_entry_revision_in_db(self, revid, path, git_id, executable, revision):
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self.cachedb.execute(
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"insert into entry_revision"
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" (inventory, path, gitid, executable, revision)"
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" values (?, ?, ?, ?, ?)",
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(revid, path, git_id, executable, revision))
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def _all_inventories_in_db(self, revids):
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result = self.cachedb.execute(
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"select count(*) from inventory where revid = ?",
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def _set_entry_revision(self, entry, revid, path, git_id):
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# If a revision is in the cache, we assume it contains entries for the
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# whole inventory. So if all parent revisions are in the cache, but no
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# parent entry is present, then the entry revision is the current
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# revision. That amortizes the number of _get_file_revision calls for
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# large pulls to a "small number".
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entry_rev = self._get_entry_revision_from_db(
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revid, path, git_id, entry.executable)
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if entry_rev is not None:
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entry.revision = entry_rev
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revision = self.get_revision(revid)
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for parent_id in revision.parent_ids:
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entry_rev = self._get_entry_revision_from_db(
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parent_id, path, git_id, entry.executable)
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if entry_rev is not None:
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if self._all_inventories_in_db(revision.parent_ids):
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entry_rev = self._get_file_revision(revid, path)
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self._set_entry_revision_in_db(
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revid, path, git_id, entry.executable, entry_rev)
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#self.cachedb.commit()
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entry.revision = entry_rev
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def escape_file_id(file_id):
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return file_id.replace('_', '__').replace(' ', '_s')
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class GitRevisionTree(revisiontree.RevisionTree):
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revision = self.get_revision(revision_id)
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inventory = GitInventory(revision_id)
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tree_id = revision.properties['git-tree-id']
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type_map = {'blob': 'file', 'tree': 'directory' }
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def get_inventory(tree_id, prefix):
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for perms, type, obj_id, name in self._git.get_inventory(tree_id):
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full_path = prefix + name
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executable = (perms[-3] in ('1', '3', '5', '7'))
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entry = GitEntry(full_path, type_map[type], revision_id,
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text_sha1, executable)
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inventory.entries[full_path] = entry
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get_inventory(obj_id, full_path+'/')
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get_inventory(tree_id, '')
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class GitRevisionTree(object):
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def __init__(self, repository, revision_id):
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self._repository = repository
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self.repository = repository
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self.revision_id = revision_id
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git_id = ids.convert_revision_id_bzr_to_git(revision_id)
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self.tree = repository._git.commit(git_id).tree
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self._inventory = inventory.Inventory(revision_id=revision_id)
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self._inventory.root.revision = revision_id
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self._build_inventory(self.tree, self._inventory.root, "")
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self.inventory = repository.get_inventory(revision_id)
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def get_file(self, file_id):
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return iterablefile.IterableFile(self.get_file_lines(file_id))
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def get_file_lines(self, file_id):
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entry = self._inventory[file_id]
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if entry.kind == 'directory': return []
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git_id = self._inventory.git_ids[file_id]
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if git_id in self._inventory.git_file_data:
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return self._inventory.git_file_data[git_id]
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return self._repository._get_blob(git_id)
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def _build_inventory(self, tree, ie, path):
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assert isinstance(path, str)
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for b in tree.contents:
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basename = b.name.decode("utf-8")
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child_path = urlutils.join(path, b.name)
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file_id = escape_file_id(child_path.encode('utf-8'))
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child_ie = inventory.InventoryDirectory(file_id, basename, ie.file_id)
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elif b.mode[0] == '1':
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child_ie = inventory.InventoryFile(file_id, basename, ie.file_id)
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child_ie.text_sha1 = osutils.sha_string(b.data)
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elif b.mode[1] == '2':
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child_ie = inventory.InventoryLink(file_id, basename, ie.file_id)
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child_ie.text_sha1 = osutils.sha_string("")
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raise AssertionError(
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"Unknown file kind, perms=%r." % (b.mode,))
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child_ie.text_size = b.size
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raise AssertionError(
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"Unknown blob kind, perms=%r." % (b.mode,))
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child_ie.executable = bool(int(b.mode[3:], 8) & 0111)
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child_ie.revision = self.revision_id
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assert not basename in ie.children
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ie.children[basename] = child_ie
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self._build_inventory(b, child_ie, child_path)
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class GitFormat(object):
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supports_tree_reference = False
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def get_format_description(self):
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return "Git Repository"
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obj_id = self.inventory[file_id].text_sha1
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return self.repository._git.cat_file('blob', obj_id)
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def is_executable(self, file_id):
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return self.inventory[file_id].executable
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class GitInventory(object):
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def __init__(self, revision_id):
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self.root = GitEntry('', 'directory', revision_id)
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self.entries[''] = self.root
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def __getitem__(self, key):
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return self.entries[key]
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def iter_entries(self):
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return iter(sorted(self.entries.items()))
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def iter_entries_by_dir(self):
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return self.iter_entries()
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return len(self.entries)
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class GitEntry(object):
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def __init__(self, path, kind, revision, text_sha1=None, executable=False,
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self.executable = executable
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self.name = osutils.basename(path)
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self.parent_id = None
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self.parent_id = osutils.dirname(path)
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self.revision = revision
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self.symlink_target = None
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self.text_sha1 = text_sha1
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self.text_size = None
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return "GitEntry(%r, %r, %r, %r)" % (self.path, self.kind,
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self.revision, self.parent_id)